Sectional printing-form.



J. S, DUNCAN.

SGTIONAL PRINTING FORM.

111L1c1111o-11 111.1311 111111.23, 1912.

1,054,133@ Petented Feb.25,1913.

UNITED STATES PATENT UFFTCE.

V JOSEPH S. DUNCAN, 0F CHICAGO, ILLINOIS, ASSIGNOR TO ADDRESSOGRAPH COMPANY,

' 0F CHICAGO. ILLINOIS. A CORPORATION OF ILLINOIS.

SECTIONAL PRINTING-PORN" Specification of Letters Patent.

Application filed March 23, 1912.

Paten ted 1 el). 25, 1913.

serial No. 685.315.

To all w71 om i' t may concern.'

Be it known that I, Josemi S. DUNCAN, a citizen of the `United States, residing at Chicago, in the county of Cook and State ot Illinois, have invented certain new and useful Improvements in Sectional Printing- Forms, of which the following is a specification.

This invention relates to printing forms in general and more particularly to a sectional printing form adapted to print a full page letter or circular at one impression.

One of the primary objects ot the present invention is the provlsion of a printing torni which shall be made up of a plurality of sheet metal form sections, each having printing characters struck up from one face thereof. The sections when assembled are arranged in juxtaposition upon a t'orin bed producing a composite form of the size required to print a single page.

Anotlier object of the invention is to provide a suit-able -torm bed to receive the torni sections and retaining devices b v means of which the sections are secured to the bed and retained in the desired position thereon.

AOther objects, and advantages will be apparent to those skilled inthe art as the invention is better understood by reference to the following description when considered in connection with the aecompanving drawings illustrating the invention in one 'of its preferred embodiments.

Referring to the drawingswFigure l is a transverse sectional View of a printing forni embodying my invention, this View being taken substantially on the line 1 1 of Fig 2; Fig. 2 is a plan View of a form section elnbodying my invention; and Fig. 3 is ay fragmentary longitudinal section taken substan-` tially on the line 3.-3 of Fig. 2.

Various attempts to print letters in simir lation of typewriting have been made prior` to my present invention but, so far as I am aware, the form from which the page is printed has not been made of sheet metal with the printing characters stamped up therefrom. lt is well known that printing characters stamped up from sheet metal will produce innn'ossions very closely represent.- ing typewriliingr and, by means o'l the sheet metal printing torin cmuprising the subject matter of the present application, a 'full letter page closelv representing a typewritten pa ge can be printed at one operation.

tu order that the printing characters may be stanipelfl up on the inetahforiu without distorting the form or making it so large as to he unwield)v and dillieult t6 operate upon, l prefer to ma kelhe l'orni il'roin a plurality oi' sections which` when assembled, will roduce an even and unil'orni printing suri'ace. 'lhc sections are vnovided with a plurality of lines ot' printing eluiracters by agraphotype or other suitable uiechaiisin and when the entire letter to be printen has been reproduced ou a series of these vprinting sections the ,sections are assembled .in juxtaposition on a torni bed and arc retained in posit-ion so that a uniform lino spacing is secured over the area of the torni.

From a n inspection of the drawings it will be observed that the. forni bed which may be made ot. cast metal, or other preferred uniterial. is provided on one face Witha series ot transversely extending grooves or depressions (t arranged in parallelism thrinighout the area of the bed. These grooves are spaced apart a distance equal to the width of the printing form sections 7 so .that when the sections are assembled on the bed their edges will abut against the adjacent sections.

The individual printing form sections, which form the subject matter of another application filed concurrently herewith,-are provided at one edge with downwardly extending flanges 8 which tit into the grooves (l and prevent movement of the sections longitudinallyof the bed. Each torni section is provided on its upper face with a plurality of lines of stamped up printing characters 9 and the sections are so constructed that when they are assembled. on the bed the spacing between the individual lines on the various 'sectionsnvill be equal to the spacing-between .printing forni is thereby secured. Y -For the purpose of locking the forni sections to the bed I have provided suitable retaining devices kWhich will n'ovv be described: "Upon one side of the bed I provide a retaining device in the forni of a bar or plate l0 which. extends slightly above the bed and is provided'ivith an inwardly eX- tending tiange or lip 11 adapted to overlie the ends of the form sections. rihis device is lixedly secured to the bed by suitable screws 12 or other preferred fastening nieans. The corner of the bed beneath the flange or lip ll is preferably cut away as indicated at 13 so'that-the ends of the forni section 7 may beginserted under the flange 'Without removing the retaining device 10 and when. the sections are depressed flat against-theface of the bed the ends Will be tightly gripped beneath the ange. The top ot the retaining device l0 may be provided with a longitudinaliyextending groove 14, if desired, to' prolvideineaiis by which the temporary extensions on the printing sections may be broken litiib'eforethey are p ositior'ied` on the bed. A

:second retainin-g device l5 is uslabl'y se- 'cured'v ond the opposite side of the bed' and also has at its upper edge an inwardly prol jecting lip or extension-,16- adapted to overlie the ends of the printing sections at that side of the bed. The retainino device 15 is atl--V justably secured to the bed 5 by screivs'lor other preferred fastening means and 'the pertorations 18 through which the screws are inserted are made larger :than the screws and taper so that the taperedv screw-head will draw'the retaining device downwardly and firmly clamp the ends of the form sections between the bed and the overlying iange 16. The bedli is preferably provided with a recess or rabhet 19 so that-When the retaining device 15 has been removed ones fingers can be inserted beneath the projecting ends of the sections whereupon the sections may be readily 'removed from the bed. i

Eromthe foregoing it will be understood tha-tithe printing form is composed of a plurality of :form sections each provided. with .lines of stamped up printing characters and arranged upon the bed to present a uniform .printing surface comprising' equally spaced lines of printing characters. The form sec? tions when assembled on the bed. are securety locked thereto in the desired osition by suitable retaining devices and a lter the desired number of printed copies/have been obtained troni-ther ferm the sections may be removed and; replaced by other sections bearing'the desiredzprintinfgcharacters. lit-Will thus be Aehirious thatii-life bed and the retaining devices maybe used repeatedly with diliereni forni sections whilethe individual sections maybe filed aivay and used again, it' desired.

it is believed that n'iy invention and many otite attendant advantages will be und-er stood troni the foregoing without 'further description and.y -ivhile l have shown and den -V scribed one' preferred"embodiment of the.

thereonand supported thereby between opl posite 'edges-of the sections, a retaining defl vice lixed to one side oi the bed and havingv a iiange projecting overthe bed, sia-id "bed being cut away below the iiange andv outto the tree edge thereotto permit the insertion of the ends of the torni sections thereunder, andl anadjustabl'e retaining" device at the opposites` de of the bed whereby the forni.

. sections are clamped to the. bed.

2. A printing device 'comprisinga printing 'form, a bedl supporting fthe printing i'ornibetween its opposite edges, and a retaining tlange carried b'vi the bed and over lying one edge oi the printing form, the upper tace of the bed being provided with arecess underlying the flange and extending to the .free edge thereof7 one edge of the revcess and the free edge of the flange defining an' entrance slot through which one edge of the printing forni may b'feiintroduced` into the l and beneath the fiangei 3. A'printing` device comprising a bed having a beveled upper cdgda printing form lying upon the bed with one edge portion oif'erhanging the beveled portion of the bed, and a retaining device'carried by the bed and provided with a retaining flange ex` tending inwardiy and overhanging the beveled portion' of the bed and the adjacentedge -ot the pri ating torni, 1the inner edge of the bevel and the inner edge of the flange defining an entrance slot through which one edge of the printing torni iii-ay be introduced beneath the liange. v

4. A printing device comprising a bed having one oi its upper edges rabbeted, a printing forni'lying upon the bed with one edge over-hanging the r'abbeted portionof the bed, there being a space between the over-hanging edge portion of the printing forni and the bottom of the rabbet to permit access to the overhanging printing forno portion tor removing the forni and a rcinovable retaining device carried by therebbeted edge of the bed and provided with a flange overhanging the adjacent edge of the printing forni.

iic

Aiis` 5. printing device comprising a bed movable retaining device c arried by the bed having one-oits uggeer edges beveled and -nnd overhnnging the rabbeted portion there- 10 its opposite 'ed e ra ted, a printing form of and the adjacent edge Yof the printing 'restin upon. e bed andl overhanging the form.

5 bevel andJabbebed portions thereof. Va re- JOSEPH S. DUNCAN. taining devise carried by the bed and over- Witnesses: i

hngin the bevel thereofand the adjacent WM. O. BELT, edge o the printing form, and another re- IRA J. WILSON. 

